Differences

This shows you the differences between two versions of the page.

--- vpn-ssh-tap [2020/07/25 00:12]
robm created
+++ vpn-ssh-tap [2020/07/25 12:28]
robm [VPN via SSH TAP interfaces]
@@ Line 3: / Line 3: @@
 Useful to run the following on both local and remote, to get a sense of what's happening:
-<code>
+  * ''bridge monitor''
-bridge monitor
+  * ''watch ip --brief address''
-</code>
+  * ''watch ip --brief link''
+  * ''watch bridge link''
 VM, where eth1 is connected to the network I want to make my RPi appear in:
 <code>
-ip link add br0 type bridge up
+ip link add br0 up type bridge             # Create a bridge
-ip link add br0 up type bridge
+ip address add 192.168.167.134/24 dev br0  # Copy the address and netmask of eth1
-dhclient -r eth1 && ip link set eth1 master br0 && dhclient br0
+ip address flush dev eth1                  # Remove eth1's addresses completely
-ip link set eth1 down
+ip link set eth1 master br0                # Attach eth1 to the bridge
-ip link set eth1 up
 </code>
@@ Line 20: / Line 21: @@
 <code>
-ip link add br0 type bridge
+VM_HOST=192.168.167.237
-ip link del br0
+sudo ip link add br0 up type bridge
-ip link add br0 up type bridge
+sudo ip link set eth0 up master br0
-ssh -o PermitLocalCommand=yes -o "LocalCommand=ip link set tap5 up master br0" -o Tunnel=ethernet -w 5:5 -t root@192.168.167.237 "ip link set tap5 up master br0"
+sudo ssh \
+  -o PermitLocalCommand=yes \
+  -o "LocalCommand=ip link set tap5 up master br0" \
+  -o Tunnel=ethernet \
+  -w 5:5 \
+  -t \
+  root@${VM_HOST} \
+  "ip link set tap5 up master br0"
 </code>
+===== Debugging =====
+I found [[https://www.wireshark.org/docs/man-pages/tshark.html| tshark - Dump and analyze network traffic]] useful, as it can capture ethernet frames to a file (such as ''/vagrant/tshark'') which you can then load into the Wireshark GUI after the fact.

RobMeerman.co.uk

User Tools

Site Tools

Differences

Page Tools